/*
 * Copyright 2007-2008 Michele Mostarda ( michele.mostarda@gmail.com ).
 * All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the 'License');
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an 'AS IS' BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.asemantics.anthill;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;

/**
 * The base class for every Task defined in <i>AntHill</i>.
 *
 * @author Michele Mostarda
 */
public abstract class AbstractTask extends Task {

    /**
     * Validates an attribute value.
     * @param s
     * @param stringQualifier
     */
    protected static void validateAttribute(String s, String stringQualifier) {
        if(s == null) {
            throw new BuildException(stringQualifier + " cannot be null.");
        }
        if( s.trim().length() == 0 ) {
            throw new BuildException(stringQualifier + " contains only blanks.");
        }
    }

}
